Download App

5. Magnetism and matter — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics5. Magnetism and matter1 Mark
MCQ
Assertion : Diamagnetic materials can exhibit magnetism.

Reason : Diamagnetic materials have permanent magnetic dipole moment.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • ✓
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: C.
If the Assertion is correct but Reason is incorrect.
c
Diamagnetic material exhibits magnetism in reverse direction. $R$ is a wrong statement. Because due to absence of unpaired electron in diamagnetic material it does not exhibit permanent magnet dipole moment.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 5. Magnetism and matter→5. Magnetism and matter — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

$P - N $ junction is said to be forward biased, when
→
In order to increase the capacity of a parallel plate condenser, one should introduce a sheet of between the plates $($assume that the space is completely filled$).$
→
Through two parallel wires A and B, 10 and 2 ampere of currents are passed respectively in opposite direction. If the wire A is infinitely long and the length of the wire B is 2 m, the force on the conductor B, which is situated at 10 cm distance from A will be
→
The ratio of radii of nuclei $_{13}A{l^{27}}$ and $_{52}{X^A}$ is $3 : 5$. The number of neutrons in the nuclei of $X$ will be
→
In a common emitter transistor, the current gain is $80$. What is the change in collector current, when the change in base current is $250$ $\mu A$
→
The resistivity of iron is$1 \times {10^{ - 7}}\,ohm - m$. The resistance of a iron wire of particular length and thickness is $1\, ohm$. If the length and the diameter of wire both are doubled, then the resistivity in $ohm - m$ will be
→
A conducting rod of length $l$ and mass $m$ is moving down a smooth inclined plane of inclination $\theta$ with constant velocity $v$. A current i is flowing in the conductor in a direction perpendicular to paper inward. A vertically upward magnetic field $B$ exists in space. Then, magnitude of magnetic field $B$ is:
→
A transistor is used in common emitter mode as an amplifier. Then
→
The coercivity of a small magnet where the ferromagnet gets demagnetized is $3 \times 10^3 Am ^{-1}$. The current required to be passed in a solenoid of length $10 \ cm$ and number of turns $100$ , so that the magnet gets demagnetized when inside the solenoid, is:
→
Assertion : Penetrating power of X-rays increases with the increasing the wavelength.
Reason : The penetrating power of X-rays increases with the frequency of X-rays.
→